# Science Custom Keyboard vs Hundred Schools Classics

The clearest difference is in-app purchases: Science Custom Keyboard at none against Hundred Schools Classics's 2. Science Custom Keyboard also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Hundred Schools Classics sells 2 in-app purchases, starting at $1.99 per month. Science Custom Keyboard asks for nothing beyond the download.

Science Custom Keyboard ships an update every 2 months, Hundred Schools Classics every 6 weeks. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Science Custom Keyboard | Hundred Schools Classics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Size | 1 MB | 15 MB |
| Requires iOS | 17.5 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Niaris](https://appshunter.io/developer/1704249655) | [akio kobayashi](https://appshunter.io/developer/6804334180) |

## What reviewers say

### Science Custom Keyboard

[App page](https://appshunter.io/ios/app/science-custom-keyboard/id6463341508)

**In-app purchases:** none


### Hundred Schools Classics

[App page](https://appshunter.io/ios/app/hundred-schools-classics/id6808663006)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 支援プラン | $1.99 | per month |
| 支援プラン（年額） | $19.99 | per year |


## Frequently asked questions

### Is Science Custom Keyboard free?

Science Custom Keyboard is free to download, with no in-app purchases.

### Is Hundred Schools Classics free?

Hundred Schools Classics is free to download, with in-app purchases available.

### Do Science Custom Keyboard or Hundred Schools Classics have ads?

Hundred Schools Classics shows ads; Science Custom Keyboard does not.

### Which is updated more often, Science Custom Keyboard or Hundred Schools Classics?

Science Custom Keyboard ships an update every 2 months, and Hundred Schools Classics every 6 weeks. Most recently, Science Custom Keyboard was updated on November 3, 2026 and Hundred Schools Classics on November 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*